anyone interested in replacing door speakers but....

RonRizz

Yes, the cutout diameter is 5 3/4" I made mine 7 1/4" outside as well.

__________________
P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

kenchan

Thanks!

BeemaaZ

I am sold. Now how can I make these babies work with the stupid Bose system? Should I get a new HU and new tweeters?

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RonRizz

A good place to start is to look at Big's stickied thread on Bose.

__________________
P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

BeemaaZ

I have read it. But your post below made me think you just found a short cut.

__________________
SoCal 40th Meet
Old & New Mods
** Steering Lock RECALL**
Own 40th 370Z? Get the build # and the Manuf. date here

kenchan

yah, honestly if you want to improve the bose setup, i'd get a new HU first and try to eq' it first, beemaz. make sure the HU has at least 4v pre outs. i have the shitty bose in my G35C and run a pioneer dd + got door polk components afterwards. sounds good.

deusxq

Update on the speakers. RonRizz wasn't kidding, there is a lot of sound coming from these things. Was a little bit of a pain in the *** to mount them though, had to grind down my old spacers to make way for these beasts. That said, once everything was installed, the speakers sound great. In my scenario though, I need to add more sound deadening and perhaps get a thicker speaker mount, since I believe that I'm hitting the window frame at loud volume.

All that said, rep RonRizz for a great suggestion. For the price, these are the best speakers I've heard.

kenchan

sounds good deusexq do you run anything else besides the speakers in your audio setup? ie HU, amp, etc.

RonRizz

I cant confirm or deny, but if the 5/8" doesn't give you enough, a layer or two of weatherstripping could only help matters. Personally, I use it under all my speaker flanges. It helps create a good seal, and helps with vibration issues. 1/8" is not much to make up. a single layer under your spacer, and under your speaker flange may be just the ticket.

__________________
P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

Corona

Thanks. I may go that route instead.

ksagis

@RonRizz

You mention Xover at 50 hertz, I assume that's highpass and active, what order of cutoff were you using at 50 hertz?

Were you using another active filter, routing to the passive module for the Hertz, or simply relying on natural rolloff? If you were using a passive filter, was the impedance of Hertz and Lanzar about the same?

Thanks

RonRizz

I am running fully active off the processor in my head unit.
I am bandpassing my hertz woofers at 63hz with a 6db slope, to 1600hz with a 12db slope, and when I change to the Lanzars, I'm dropping to 50hz, and a 12db slope, to 1600hz with a 12db slope..... I run 2 sets of tweeters, the first are band passed from 1600 to 12khz, with a 12db slope, the second set in my a pillars are high passed at 12khz, with a 12 db slope.

__________________
P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

ksagis

Interesting, you're getting pretty low response from your tweeters, the 1600 hz @ 12 dB high pass (in your dash?) is lower than I might have expected - what kind of tweeters are you running (assume this is in the dash location?)

Corona

Ehhh… Is there a pop quiz next week on this?

I respect you guys who can speak to this audio magic. Haha I just know how to use the + / - on the HU. Match a few color wires to make it work on the back end.

RonRizz

Its not as complicated as it sounds.... Briefly put, (or as brief as I can make it) Human hearing is 20 hertz to 20k hertz. There are 10 "octaves" therein. (frequencies) To move up the scale one full Octave is to double the frequency. so your octaves would be 20, 40, 80, 160 hertz, and so on... up to 20,000.
Component speakers are designed so the proper frequencies make it to the proper speakers. They do this with crossover networks, or "filters"
Low pass filters leave frequencies below their point through to the speaker
High pass filters leave frequencies above their point through to the speaker
So in a typical setup, A Subwoofer will see 20 to 80 hertz. A low pass filter keeps anything over 80 hertz from getting to the Sub.
A Midrange will use both a high and a low pass filter. 80 hertz high pass, and 3200 hertz low pass. This means the Midrange will see frequencies from 80 to 3200 hertz. A tweeter will get a high pass filter at 3200 hertz, so it only sees frequencies at 3200 hertz and above, to 20k Hertz.

So in this setup, my crossover points are......80 Hertz, and 3200 hertz.
A crossover "slope" is the number of decibels a filter will allow to pass for every octave beyond that set point. they are typically at 12 decibels per octave. for example, lets say you are playing some music at 100 decibels. because your Subwoofers Low pass crossover (filter) is set at 80 hertz, your subwoofer will see frequencies above that, but at a greatly diminished amount. (in this case 12 db per octave) so your next octave is 160 hertz......100db minus 12db=88db, next would be 320hz.....88db minus 12db=76db....easy peasy.
Realize that a difference of 3db in volume is much bigger than you think.

__________________
P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals